Allison Transmission Holdings (ALSN)

As of 30 September 2026, short interest in ALSN is 2,329,669 shares, down 443,140 shares over the last month. Over the last 48 readings it ranged from 1,289,934 shares (29 November 2024) to 3,940,795 shares (15 July 2026). At the reported average volume of 951K shares a day that is 2.5 days to cover.

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As of 12 October 2026, the short share of ALSN volume is 61.6%, down 4.8 points over the last five sessions. Over the last 30 readings it ranged from 44.0% (6 October 2026) to 72.8% (4 September 2026). The latest reading is 2.9 points above the 30-session average of 58.7%, on 237K shares reported.

As of 9 September 2026, the fails-to-deliver balance in ALSN is 9,043 shares, up 9,039 shares over the last settlement date. Over the last 30 readings it ranged from 1 share (1 May 2026) to 1,940,394 shares (29 June 2026). The latest reading sits at the bottom of that range.

Insiders at ALSN reported 5 open-market sells worth $4.2M in the last 90 days and no open-market buys. Latest filing: Graziosi David S. (Chair, President and CEO) on 2026-08-21.

Form 4 filings are due within two business days of the trade. Insiders sell for many reasons that say nothing about the company; open-market buys are rarer.

14 Form 144 notices on file for ALSN worth $9.3M at the prices reported; 3 in the last 90 days worth $4.2M. Latest: Graziosi David S. filed on 2026-08-21 to sell 26,708 shares ($3.6M) from 2026-08-21.

1 holder reports 5% or more of ALSN in its latest filing, on Schedule 13G (passive). The holder is Vanguard Capital Management at 5.2% of the class (4,340,063 shares), filed 2026-04-29 for an event on 2026-03-31.

8 of the 30 tracked managers held ALSN at their latest 13F, $494.9M in total at quarter-end prices. Renaissance Technologies is the largest at $218.6M (0.3% of its portfolio) as of 2026-06-30. Over the prior quarter 3 added shares and 5 cut.

Only the 30 tracked managers on the funds hub; a 13F reports long positions in US listed stock at quarter end, 45 days late, and says nothing about shorts or positions sold since.

In Q2 FY 2026 (quarter ended 2026-06-30) Allison Transmission Holdings reported revenue of $1.57B, up 92.4% from the same quarter a year earlier, and net income of $181.0M (2.15 diluted EPS). In FY 2025 it generated $836.0M of operating cash flow and spent $328.0M on buybacks and $91.0M on dividends. As of 2026-06-30, cash was $399.0M against $4.09B of debt.

Quarterly, last 8 quarters

Fiscal years, with buybacks and dividends

Quarters are the three-month figures the company reports; a fourth quarter marked derived is the fiscal year less the three reported quarters, since companies report it only inside the 10-K. Fiscal years are the annual figures. Buybacks are the cash the company paid to repurchase its common stock in the year, not the amount authorized. Balance sheet lines are as of 2026-06-30; shares outstanding as of 2026-07-22 from the cover page.